Gaya APA

Dewey, M., MITCHELL, J, S. (2011). Dewey Decimal Classification and relative index: edition 23, Volume 4 Relative Index (Ed. 23). Ohio: OCLC.

Gaya MLA

Dewey, Melvil., MITCHELL, Joan, S. "Dewey Decimal Classification and relative index: edition 23, Volume 4 Relative Index". Ed. 23 Ohio: OCLC, 2011. Text.